1 #define __SP_DESKTOP_STYLE_C__
3 /** \file
4 * Desktop style management
5 *
6 * Authors:
7 * bulia byak
8 * verbalshadow
9 *
10 * Copyright (C) 2004, 2006 authors
11 *
12 * Released under GNU GPL, read the file 'COPYING' for more information
13 */
15 #include "desktop.h"
16 #include "color-rgba.h"
17 #include "svg/css-ostringstream.h"
18 #include "svg/svg.h"
19 #include "svg/svg-color.h"
20 #include "selection.h"
21 #include "sp-tspan.h"
22 #include "sp-textpath.h"
23 #include "inkscape.h"
24 #include "style.h"
25 #include "prefs-utils.h"
26 #include "sp-use.h"
27 #include "sp-feblend.h"
28 #include "sp-filter.h"
29 #include "sp-filter-reference.h"
30 #include "sp-gaussian-blur.h"
31 #include "sp-flowtext.h"
32 #include "sp-flowregion.h"
33 #include "sp-flowdiv.h"
34 #include "sp-linear-gradient.h"
35 #include "sp-radial-gradient.h"
36 #include "sp-pattern.h"
37 #include "xml/repr.h"
38 #include "libnrtype/font-style-to-pos.h"
41 #include "desktop-style.h"
43 /**
44 * Set color on selection on desktop.
45 */
46 void
47 sp_desktop_set_color(SPDesktop *desktop, ColorRGBA const &color, bool is_relative, bool fill)
48 {
49 /// \todo relative color setting
50 if (is_relative) {
51 g_warning("FIXME: relative color setting not yet implemented");
52 return;
53 }
55 guint32 rgba = SP_RGBA32_F_COMPOSE(color[0], color[1], color[2], color[3]);
56 gchar b[64];
57 sp_svg_write_color(b, 64, rgba);
58 SPCSSAttr *css = sp_repr_css_attr_new();
59 if (fill) {
60 sp_repr_css_set_property(css, "fill", b);
61 Inkscape::CSSOStringStream osalpha;
62 osalpha << color[3];
63 sp_repr_css_set_property(css, "fill-opacity", osalpha.str().c_str());
64 } else {
65 sp_repr_css_set_property(css, "stroke", b);
66 Inkscape::CSSOStringStream osalpha;
67 osalpha << color[3];
68 sp_repr_css_set_property(css, "stroke-opacity", osalpha.str().c_str());
69 }
71 sp_desktop_set_style(desktop, css);
73 sp_repr_css_attr_unref(css);
74 }
76 /**
77 * Apply style on object and children, recursively.
78 */
79 void
80 sp_desktop_apply_css_recursive(SPObject *o, SPCSSAttr *css, bool skip_lines)
81 {
82 // non-items should not have style
83 if (!SP_IS_ITEM(o))
84 return;
86 // 1. tspans with role=line are not regular objects in that they are not supposed to have style of their own,
87 // but must always inherit from the parent text. Same for textPath.
88 // However, if the line tspan or textPath contains some style (old file?), we reluctantly set our style to it too.
90 // 2. Generally we allow setting style on clones, but when it's inside flowRegion, do not touch
91 // it, be it clone or not; it's just styleless shape (because that's how Inkscape does
92 // flowtext).
94 if (!(skip_lines
95 && ((SP_IS_TSPAN(o) && SP_TSPAN(o)->role == SP_TSPAN_ROLE_LINE)
96 || SP_IS_FLOWDIV(o)
97 || SP_IS_FLOWPARA(o)
98 || SP_IS_TEXTPATH(o))
99 && !SP_OBJECT_REPR(o)->attribute("style"))
100 &&
101 !(SP_IS_FLOWREGION(o) ||
102 SP_IS_FLOWREGIONEXCLUDE(o) ||
103 (SP_IS_USE(o) &&
104 SP_OBJECT_PARENT(o) &&
105 (SP_IS_FLOWREGION(SP_OBJECT_PARENT(o)) ||
106 SP_IS_FLOWREGIONEXCLUDE(SP_OBJECT_PARENT(o))
107 )
108 )
109 )
110 ) {
112 SPCSSAttr *css_set = sp_repr_css_attr_new();
113 sp_repr_css_merge(css_set, css);
115 // Scale the style by the inverse of the accumulated parent transform in the paste context.
116 {
117 NR::Matrix const local(sp_item_i2doc_affine(SP_ITEM(o)));
118 double const ex(NR::expansion(local));
119 if ( ( ex != 0. )
120 && ( ex != 1. ) ) {
121 sp_css_attr_scale(css_set, 1/ex);
122 }
123 }
125 sp_repr_css_change(SP_OBJECT_REPR(o), css_set, "style");
127 sp_repr_css_attr_unref(css_set);
128 }
130 // setting style on child of clone spills into the clone original (via shared repr), don't do it!
131 if (SP_IS_USE(o))
132 return;
134 for (SPObject *child = sp_object_first_child(SP_OBJECT(o)) ; child != NULL ; child = SP_OBJECT_NEXT(child) ) {
135 if (sp_repr_css_property(css, "opacity", NULL) != NULL) {
136 // Unset properties which are accumulating and thus should not be set recursively.
137 // For example, setting opacity 0.5 on a group recursively would result in the visible opacity of 0.25 for an item in the group.
138 SPCSSAttr *css_recurse = sp_repr_css_attr_new();
139 sp_repr_css_merge(css_recurse, css);
140 sp_repr_css_set_property(css_recurse, "opacity", NULL);
141 sp_desktop_apply_css_recursive(child, css_recurse, skip_lines);
142 sp_repr_css_attr_unref(css_recurse);
143 } else {
144 sp_desktop_apply_css_recursive(child, css, skip_lines);
145 }
146 }
147 }
149 /**
150 * Apply style on selection on desktop.
151 */
152 void
153 sp_desktop_set_style(SPDesktop *desktop, SPCSSAttr *css, bool change, bool write_current)
154 {
155 if (write_current) {
156 // 1. Set internal value
157 sp_repr_css_merge(desktop->current, css);
159 // 1a. Write to prefs; make a copy and unset any URIs first
160 SPCSSAttr *css_write = sp_repr_css_attr_new();
161 sp_repr_css_merge(css_write, css);
162 sp_css_attr_unset_uris(css_write);
163 sp_repr_css_change(inkscape_get_repr(INKSCAPE, "desktop"), css_write, "style");
164 sp_repr_css_attr_unref(css_write);
165 }
167 if (!change)
168 return;
170 // 2. Emit signal
171 bool intercepted = desktop->_set_style_signal.emit(css);
173 /** \todo
174 * FIXME: in set_style, compensate pattern and gradient fills, stroke width,
175 * rect corners, font size for the object's own transform so that pasting
176 * fills does not depend on preserve/optimize.
177 */
179 // 3. If nobody has intercepted the signal, apply the style to the selection
180 if (!intercepted) {
181 for (GSList const *i = desktop->selection->itemList(); i != NULL; i = i->next) {
182 /// \todo if the style is text-only, apply only to texts?
183 sp_desktop_apply_css_recursive(SP_OBJECT(i->data), css, true);
184 }
185 }
186 }
188 /**
189 * Return the desktop's current style.
190 */
191 SPCSSAttr *
192 sp_desktop_get_style(SPDesktop *desktop, bool with_text)
193 {
194 SPCSSAttr *css = sp_repr_css_attr_new();
195 sp_repr_css_merge(css, desktop->current);
196 if (!css->attributeList()) {
197 sp_repr_css_attr_unref(css);
198 return NULL;
199 } else {
200 if (!with_text) {
201 css = sp_css_attr_unset_text(css);
202 }
203 return css;
204 }
205 }
207 /**
208 * Return the desktop's current color.
209 */
210 guint32
211 sp_desktop_get_color(SPDesktop *desktop, bool is_fill)
212 {
213 guint32 r = 0; // if there's no color, return black
214 gchar const *property = sp_repr_css_property(desktop->current,
215 is_fill ? "fill" : "stroke",
216 "#000");
218 if (desktop->current && property) { // if there is style and the property in it,
219 if (strncmp(property, "url", 3)) { // and if it's not url,
220 // read it
221 r = sp_svg_read_color(property, r);
222 }
223 }
225 return r;
226 }
228 double
229 sp_desktop_get_master_opacity_tool(SPDesktop *desktop, char const *tool)
230 {
231 SPCSSAttr *css = NULL;
232 gfloat value = 1.0; // default if nothing else found
233 if (prefs_get_double_attribute(tool, "usecurrent", 0) != 0) {
234 css = sp_desktop_get_style(desktop, true);
235 } else {
236 Inkscape::XML::Node *tool_repr = inkscape_get_repr(INKSCAPE, tool);
237 if (tool_repr) {
238 css = sp_repr_css_attr_inherited(tool_repr, "style");
239 }
240 }
242 if (css) {
243 gchar const *property = css ? sp_repr_css_property(css, "opacity", "1.000") : 0;
245 if (desktop->current && property) { // if there is style and the property in it,
246 if ( !sp_svg_number_read_f(property, &value) ) {
247 value = 1.0; // things failed. set back to the default
248 }
249 }
251 sp_repr_css_attr_unref(css);
252 }
254 return value;
255 }
256 double
257 sp_desktop_get_opacity_tool(SPDesktop *desktop, char const *tool, bool is_fill)
258 {
259 SPCSSAttr *css = NULL;
260 gfloat value = 1.0; // default if nothing else found
261 if (prefs_get_double_attribute(tool, "usecurrent", 0) != 0) {
262 css = sp_desktop_get_style(desktop, true);
263 } else {
264 Inkscape::XML::Node *tool_repr = inkscape_get_repr(INKSCAPE, tool);
265 if (tool_repr) {
266 css = sp_repr_css_attr_inherited(tool_repr, "style");
267 }
268 }
270 if (css) {
271 gchar const *property = css ? sp_repr_css_property(css, is_fill ? "fill-opacity": "stroke-opacity", "1.000") : 0;
273 if (desktop->current && property) { // if there is style and the property in it,
274 if ( !sp_svg_number_read_f(property, &value) ) {
275 value = 1.0; // things failed. set back to the default
276 }
277 }
279 sp_repr_css_attr_unref(css);
280 }
282 return value;
283 }
284 guint32
285 sp_desktop_get_color_tool(SPDesktop *desktop, char const *tool, bool is_fill)
286 {
287 SPCSSAttr *css = NULL;
288 guint32 r = 0; // if there's no color, return black
289 if (prefs_get_int_attribute(tool, "usecurrent", 0) != 0) {
290 css = sp_desktop_get_style(desktop, true);
291 } else {
292 Inkscape::XML::Node *tool_repr = inkscape_get_repr(INKSCAPE, tool);
293 if (tool_repr) {
294 css = sp_repr_css_attr_inherited(tool_repr, "style");
295 }
296 }
298 if (css) {
299 gchar const *property = sp_repr_css_property(css, is_fill ? "fill" : "stroke", "#000");
301 if (desktop->current && property) { // if there is style and the property in it,
302 if (strncmp(property, "url", 3)) { // and if it's not url,
303 // read it
304 r = sp_svg_read_color(property, r);
305 }
306 }
308 sp_repr_css_attr_unref(css);
309 }
311 return r | 0xff;
312 }
313 /**
314 * Apply the desktop's current style or the tool style to repr.
315 */
316 void
317 sp_desktop_apply_style_tool(SPDesktop *desktop, Inkscape::XML::Node *repr, char const *tool, bool with_text)
318 {
319 SPCSSAttr *css_current = sp_desktop_get_style(desktop, with_text);
320 if ((prefs_get_int_attribute(tool, "usecurrent", 0) != 0) && css_current) {
321 sp_repr_css_set(repr, css_current, "style");
322 } else {
323 Inkscape::XML::Node *tool_repr = inkscape_get_repr(INKSCAPE, tool);
324 if (tool_repr) {
325 SPCSSAttr *css = sp_repr_css_attr_inherited(tool_repr, "style");
326 sp_repr_css_set(repr, css, "style");
327 sp_repr_css_attr_unref(css);
328 }
329 }
330 if (css_current) {
331 sp_repr_css_attr_unref(css_current);
332 }
333 }
335 /**
336 * Returns the font size (in SVG pixels) of the text tool style (if text
337 * tool uses its own style) or desktop style (otherwise).
338 */
339 double
340 sp_desktop_get_font_size_tool(SPDesktop *desktop)
341 {
342 gchar const *desktop_style = inkscape_get_repr(INKSCAPE, "desktop")->attribute("style");
343 gchar const *style_str = NULL;
344 if ((prefs_get_int_attribute("tools.text", "usecurrent", 0) != 0) && desktop_style) {
345 style_str = desktop_style;
346 } else {
347 Inkscape::XML::Node *tool_repr = inkscape_get_repr(INKSCAPE, "tools.text");
348 if (tool_repr) {
349 style_str = tool_repr->attribute("style");
350 }
351 }
353 double ret = 12;
354 if (style_str) {
355 SPStyle *style = sp_style_new(SP_ACTIVE_DOCUMENT);
356 sp_style_merge_from_style_string(style, style_str);
357 ret = style->font_size.computed;
358 sp_style_unref(style);
359 }
360 return ret;
361 }
363 /** Determine average stroke width, simple method */
364 // see TODO in dialogs/stroke-style.cpp on how to get rid of this eventually
365 gdouble
366 stroke_average_width (GSList const *objects)
367 {
368 if (g_slist_length ((GSList *) objects) == 0)
369 return NR_HUGE;
371 gdouble avgwidth = 0.0;
372 bool notstroked = true;
373 int n_notstroked = 0;
375 for (GSList const *l = objects; l != NULL; l = l->next) {
376 if (!SP_IS_ITEM (l->data))
377 continue;
379 NR::Matrix i2d = sp_item_i2d_affine (SP_ITEM(l->data));
381 SPObject *object = SP_OBJECT(l->data);
383 if ( object->style->stroke.type == SP_PAINT_TYPE_NONE ) {
384 ++n_notstroked; // do not count nonstroked objects
385 continue;
386 } else {
387 notstroked = false;
388 }
390 avgwidth += SP_OBJECT_STYLE (object)->stroke_width.computed * i2d.expansion();
391 }
393 if (notstroked)
394 return NR_HUGE;
396 return avgwidth / (g_slist_length ((GSList *) objects) - n_notstroked);
397 }
399 /**
400 * Write to style_res the average fill or stroke of list of objects, if applicable.
401 */
402 int
403 objects_query_fillstroke (GSList *objects, SPStyle *style_res, bool const isfill)
404 {
405 if (g_slist_length(objects) == 0) {
406 /* No objects, set empty */
407 return QUERY_STYLE_NOTHING;
408 }
410 SPIPaint *paint_res = isfill? &style_res->fill : &style_res->stroke;
411 paint_res->type = SP_PAINT_TYPE_IMPOSSIBLE;
412 paint_res->set = TRUE;
414 gfloat c[4];
415 c[0] = c[1] = c[2] = c[3] = 0.0;
416 gint num = 0;
418 gfloat prev[3];
419 prev[0] = prev[1] = prev[2] = 0.0;
420 bool same_color = true;
422 for (GSList const *i = objects; i != NULL; i = i->next) {
423 SPObject *obj = SP_OBJECT (i->data);
424 SPStyle *style = SP_OBJECT_STYLE (obj);
425 if (!style) continue;
427 SPIPaint *paint = isfill? &style->fill : &style->stroke;
429 // We consider paint "effectively set" for anything within text hierarchy
430 SPObject *parent = SP_OBJECT_PARENT (obj);
431 bool paint_effectively_set = paint->set || (SP_IS_TEXT(parent) || SP_IS_TEXTPATH(parent) || SP_IS_TSPAN(parent) || SP_IS_FLOWTEXT(parent) || SP_IS_FLOWDIV(parent) || SP_IS_FLOWPARA(parent) || SP_IS_FLOWTSPAN(parent) || SP_IS_FLOWLINE(parent));
433 // 1. Bail out with QUERY_STYLE_MULTIPLE_DIFFERENT if necessary
435 if ((paint_res->type != SP_PAINT_TYPE_IMPOSSIBLE) && (paint->type != paint_res->type || (paint_res->set != paint_effectively_set))) {
436 return QUERY_STYLE_MULTIPLE_DIFFERENT; // different types of paint
437 }
439 if (paint_res->set && paint->set && paint_res->type == SP_PAINT_TYPE_PAINTSERVER) {
440 // both previous paint and this paint were a server, see if the servers are compatible
442 SPPaintServer *server_res = isfill? SP_STYLE_FILL_SERVER (style_res) : SP_STYLE_STROKE_SERVER (style_res);
443 SPPaintServer *server = isfill? SP_STYLE_FILL_SERVER (style) : SP_STYLE_STROKE_SERVER (style);
445 if (SP_IS_LINEARGRADIENT (server_res)) {
447 if (!SP_IS_LINEARGRADIENT(server))
448 return QUERY_STYLE_MULTIPLE_DIFFERENT; // different kind of server
450 SPGradient *vector = sp_gradient_get_vector ( SP_GRADIENT (server), FALSE );
451 SPGradient *vector_res = sp_gradient_get_vector ( SP_GRADIENT (server_res), FALSE );
452 if (vector_res != vector)
453 return QUERY_STYLE_MULTIPLE_DIFFERENT; // different gradient vectors
455 } else if (SP_IS_RADIALGRADIENT (server_res)) {
457 if (!SP_IS_RADIALGRADIENT(server))
458 return QUERY_STYLE_MULTIPLE_DIFFERENT; // different kind of server
460 SPGradient *vector = sp_gradient_get_vector ( SP_GRADIENT (server), FALSE );
461 SPGradient *vector_res = sp_gradient_get_vector ( SP_GRADIENT (server_res), FALSE );
462 if (vector_res != vector)
463 return QUERY_STYLE_MULTIPLE_DIFFERENT; // different gradient vectors
465 } else if (SP_IS_PATTERN (server_res)) {
467 if (!SP_IS_PATTERN(server))
468 return QUERY_STYLE_MULTIPLE_DIFFERENT; // different kind of server
470 SPPattern *pat = pattern_getroot (SP_PATTERN (server));
471 SPPattern *pat_res = pattern_getroot (SP_PATTERN (server_res));
472 if (pat_res != pat)
473 return QUERY_STYLE_MULTIPLE_DIFFERENT; // different pattern roots
474 }
475 }
477 // 2. Sum color, copy server from paint to paint_res
479 if (paint_res->set && paint_effectively_set && paint->type == SP_PAINT_TYPE_COLOR) {
481 gfloat d[3];
482 sp_color_get_rgb_floatv (&paint->value.color, d);
484 // Check if this color is the same as previous
485 if (paint_res->type == SP_PAINT_TYPE_IMPOSSIBLE) {
486 prev[0] = d[0];
487 prev[1] = d[1];
488 prev[2] = d[2];
489 } else {
490 if (same_color && (prev[0] != d[0] || prev[1] != d[1] || prev[2] != d[2]))
491 same_color = false;
492 }
494 // average color
495 c[0] += d[0];
496 c[1] += d[1];
497 c[2] += d[2];
498 c[3] += SP_SCALE24_TO_FLOAT (isfill? style->fill_opacity.value : style->stroke_opacity.value);
499 num ++;
500 }
502 if (paint_res->set && paint_effectively_set && paint->type == SP_PAINT_TYPE_PAINTSERVER) { // copy the server
503 if (isfill) {
504 SP_STYLE_FILL_SERVER (style_res) = SP_STYLE_FILL_SERVER (style);
505 } else {
506 SP_STYLE_STROKE_SERVER (style_res) = SP_STYLE_STROKE_SERVER (style);
507 }
508 }
509 paint_res->type = paint->type;
510 paint_res->set = paint_effectively_set;
511 style_res->fill_rule.computed = style->fill_rule.computed; // no averaging on this, just use the last one
512 }
514 // After all objects processed, divide the color if necessary and return
515 if (paint_res->set && paint_res->type == SP_PAINT_TYPE_COLOR) { // set the color
516 g_assert (num >= 1);
518 c[0] /= num;
519 c[1] /= num;
520 c[2] /= num;
521 c[3] /= num;
522 sp_color_set_rgb_float(&paint_res->value.color, c[0], c[1], c[2]);
523 if (isfill) {
524 style_res->fill_opacity.value = SP_SCALE24_FROM_FLOAT (c[3]);
525 } else {
526 style_res->stroke_opacity.value = SP_SCALE24_FROM_FLOAT (c[3]);
527 }
528 if (num > 1) {
529 if (same_color)
530 return QUERY_STYLE_MULTIPLE_SAME;
531 else
532 return QUERY_STYLE_MULTIPLE_AVERAGED;
533 } else {
534 return QUERY_STYLE_SINGLE;
535 }
536 }
538 // Not color
539 if (g_slist_length(objects) > 1) {
540 return QUERY_STYLE_MULTIPLE_SAME;
541 } else {
542 return QUERY_STYLE_SINGLE;
543 }
544 }
546 /**
547 * Write to style_res the average opacity of a list of objects.
548 */
549 int
550 objects_query_opacity (GSList *objects, SPStyle *style_res)
551 {
552 if (g_slist_length(objects) == 0) {
553 /* No objects, set empty */
554 return QUERY_STYLE_NOTHING;
555 }
557 gdouble opacity_sum = 0;
558 gdouble opacity_prev = -1;
559 bool same_opacity = true;
560 guint opacity_items = 0;
563 for (GSList const *i = objects; i != NULL; i = i->next) {
564 SPObject *obj = SP_OBJECT (i->data);
565 SPStyle *style = SP_OBJECT_STYLE (obj);
566 if (!style) continue;
568 double opacity = SP_SCALE24_TO_FLOAT(style->opacity.value);
569 opacity_sum += opacity;
570 if (opacity_prev != -1 && opacity != opacity_prev)
571 same_opacity = false;
572 opacity_prev = opacity;
573 opacity_items ++;
574 }
575 if (opacity_items > 1)
576 opacity_sum /= opacity_items;
578 style_res->opacity.value = SP_SCALE24_FROM_FLOAT(opacity_sum);
580 if (opacity_items == 0) {
581 return QUERY_STYLE_NOTHING;
582 } else if (opacity_items == 1) {
583 return QUERY_STYLE_SINGLE;
584 } else {
585 if (same_opacity)
586 return QUERY_STYLE_MULTIPLE_SAME;
587 else
588 return QUERY_STYLE_MULTIPLE_AVERAGED;
589 }
590 }
592 /**
593 * Write to style_res the average stroke width of a list of objects.
594 */
595 int
596 objects_query_strokewidth (GSList *objects, SPStyle *style_res)
597 {
598 if (g_slist_length(objects) == 0) {
599 /* No objects, set empty */
600 return QUERY_STYLE_NOTHING;
601 }
603 gdouble avgwidth = 0.0;
605 gdouble prev_sw = -1;
606 bool same_sw = true;
608 int n_stroked = 0;
610 for (GSList const *i = objects; i != NULL; i = i->next) {
611 SPObject *obj = SP_OBJECT (i->data);
612 if (!SP_IS_ITEM(obj)) continue;
613 SPStyle *style = SP_OBJECT_STYLE (obj);
614 if (!style) continue;
616 if ( style->stroke.type == SP_PAINT_TYPE_NONE ) {
617 continue;
618 }
620 n_stroked ++;
622 NR::Matrix i2d = sp_item_i2d_affine (SP_ITEM(obj));
623 double sw = style->stroke_width.computed * i2d.expansion();
625 if (prev_sw != -1 && fabs(sw - prev_sw) > 1e-3)
626 same_sw = false;
627 prev_sw = sw;
629 avgwidth += sw;
630 }
632 if (n_stroked > 1)
633 avgwidth /= (n_stroked);
635 style_res->stroke_width.computed = avgwidth;
636 style_res->stroke_width.set = true;
638 if (n_stroked == 0) {
639 return QUERY_STYLE_NOTHING;
640 } else if (n_stroked == 1) {
641 return QUERY_STYLE_SINGLE;
642 } else {
643 if (same_sw)
644 return QUERY_STYLE_MULTIPLE_SAME;
645 else
646 return QUERY_STYLE_MULTIPLE_AVERAGED;
647 }
648 }
650 /**
651 * Write to style_res the average miter limit of a list of objects.
652 */
653 int
654 objects_query_miterlimit (GSList *objects, SPStyle *style_res)
655 {
656 if (g_slist_length(objects) == 0) {
657 /* No objects, set empty */
658 return QUERY_STYLE_NOTHING;
659 }
661 gdouble avgml = 0.0;
662 int n_stroked = 0;
664 gdouble prev_ml = -1;
665 bool same_ml = true;
667 for (GSList const *i = objects; i != NULL; i = i->next) {
668 SPObject *obj = SP_OBJECT (i->data);
669 if (!SP_IS_ITEM(obj)) continue;
670 SPStyle *style = SP_OBJECT_STYLE (obj);
671 if (!style) continue;
673 if ( style->stroke.type == SP_PAINT_TYPE_NONE ) {
674 continue;
675 }
677 n_stroked ++;
679 if (prev_ml != -1 && fabs(style->stroke_miterlimit.value - prev_ml) > 1e-3)
680 same_ml = false;
681 prev_ml = style->stroke_miterlimit.value;
683 avgml += style->stroke_miterlimit.value;
684 }
686 if (n_stroked > 1)
687 avgml /= (n_stroked);
689 style_res->stroke_miterlimit.value = avgml;
690 style_res->stroke_miterlimit.set = true;
692 if (n_stroked == 0) {
693 return QUERY_STYLE_NOTHING;
694 } else if (n_stroked == 1) {
695 return QUERY_STYLE_SINGLE;
696 } else {
697 if (same_ml)
698 return QUERY_STYLE_MULTIPLE_SAME;
699 else
700 return QUERY_STYLE_MULTIPLE_AVERAGED;
701 }
702 }
704 /**
705 * Write to style_res the stroke cap of a list of objects.
706 */
707 int
708 objects_query_strokecap (GSList *objects, SPStyle *style_res)
709 {
710 if (g_slist_length(objects) == 0) {
711 /* No objects, set empty */
712 return QUERY_STYLE_NOTHING;
713 }
715 int cap = -1;
716 gdouble prev_cap = -1;
717 bool same_cap = true;
718 int n_stroked = 0;
720 for (GSList const *i = objects; i != NULL; i = i->next) {
721 SPObject *obj = SP_OBJECT (i->data);
722 if (!SP_IS_ITEM(obj)) continue;
723 SPStyle *style = SP_OBJECT_STYLE (obj);
724 if (!style) continue;
726 if ( style->stroke.type == SP_PAINT_TYPE_NONE ) {
727 continue;
728 }
730 n_stroked ++;
732 if (prev_cap != -1 && style->stroke_linecap.value != prev_cap)
733 same_cap = false;
734 prev_cap = style->stroke_linecap.value;
736 cap = style->stroke_linecap.value;
737 }
739 style_res->stroke_linecap.value = cap;
740 style_res->stroke_linecap.set = true;
742 if (n_stroked == 0) {
743 return QUERY_STYLE_NOTHING;
744 } else if (n_stroked == 1) {
745 return QUERY_STYLE_SINGLE;
746 } else {
747 if (same_cap)
748 return QUERY_STYLE_MULTIPLE_SAME;
749 else
750 return QUERY_STYLE_MULTIPLE_DIFFERENT;
751 }
752 }
754 /**
755 * Write to style_res the stroke join of a list of objects.
756 */
757 int
758 objects_query_strokejoin (GSList *objects, SPStyle *style_res)
759 {
760 if (g_slist_length(objects) == 0) {
761 /* No objects, set empty */
762 return QUERY_STYLE_NOTHING;
763 }
765 int join = -1;
766 gdouble prev_join = -1;
767 bool same_join = true;
768 int n_stroked = 0;
770 for (GSList const *i = objects; i != NULL; i = i->next) {
771 SPObject *obj = SP_OBJECT (i->data);
772 if (!SP_IS_ITEM(obj)) continue;
773 SPStyle *style = SP_OBJECT_STYLE (obj);
774 if (!style) continue;
776 if ( style->stroke.type == SP_PAINT_TYPE_NONE ) {
777 continue;
778 }
780 n_stroked ++;
782 if (prev_join != -1 && style->stroke_linejoin.value != prev_join)
783 same_join = false;
784 prev_join = style->stroke_linejoin.value;
786 join = style->stroke_linejoin.value;
787 }
789 style_res->stroke_linejoin.value = join;
790 style_res->stroke_linejoin.set = true;
792 if (n_stroked == 0) {
793 return QUERY_STYLE_NOTHING;
794 } else if (n_stroked == 1) {
795 return QUERY_STYLE_SINGLE;
796 } else {
797 if (same_join)
798 return QUERY_STYLE_MULTIPLE_SAME;
799 else
800 return QUERY_STYLE_MULTIPLE_DIFFERENT;
801 }
802 }
804 /**
805 * Write to style_res the average font size and spacing of objects.
806 */
807 int
808 objects_query_fontnumbers (GSList *objects, SPStyle *style_res)
809 {
810 bool different = false;
812 double size = 0;
813 double letterspacing = 0;
814 double linespacing = 0;
815 bool linespacing_normal = false;
816 bool letterspacing_normal = false;
818 double size_prev = 0;
819 double letterspacing_prev = 0;
820 double linespacing_prev = 0;
822 /// \todo FIXME: add word spacing, kerns? rotates?
824 int texts = 0;
826 for (GSList const *i = objects; i != NULL; i = i->next) {
827 SPObject *obj = SP_OBJECT (i->data);
829 if (!SP_IS_TEXT(obj) && !SP_IS_FLOWTEXT(obj)
830 && !SP_IS_TSPAN(obj) && !SP_IS_TEXTPATH(obj)
831 && !SP_IS_FLOWDIV(obj) && !SP_IS_FLOWPARA(obj) && !SP_IS_FLOWTSPAN(obj))
832 continue;
834 SPStyle *style = SP_OBJECT_STYLE (obj);
835 if (!style) continue;
837 texts ++;
838 size += style->font_size.computed * NR::expansion(sp_item_i2d_affine(SP_ITEM(obj))); /// \todo FIXME: we assume non-% units here
840 if (style->letter_spacing.normal) {
841 if (!different && (letterspacing_prev == 0 || letterspacing_prev == letterspacing))
842 letterspacing_normal = true;
843 } else {
844 letterspacing += style->letter_spacing.computed; /// \todo FIXME: we assume non-% units here
845 letterspacing_normal = false;
846 }
848 double linespacing_current;
849 if (style->line_height.normal) {
850 linespacing_current = Inkscape::Text::Layout::LINE_HEIGHT_NORMAL;
851 if (!different && (linespacing_prev == 0 || linespacing_prev == linespacing_current))
852 linespacing_normal = true;
853 } else if (style->line_height.unit == SP_CSS_UNIT_PERCENT || style->font_size.computed == 0) {
854 linespacing_current = style->line_height.value;
855 linespacing_normal = false;
856 } else { // we need % here
857 linespacing_current = style->line_height.computed / style->font_size.computed;
858 linespacing_normal = false;
859 }
860 linespacing += linespacing_current;
862 if ((size_prev != 0 && style->font_size.computed != size_prev) ||
863 (letterspacing_prev != 0 && style->letter_spacing.computed != letterspacing_prev) ||
864 (linespacing_prev != 0 && linespacing_current != linespacing_prev)) {
865 different = true;
866 }
868 size_prev = style->font_size.computed;
869 letterspacing_prev = style->letter_spacing.computed;
870 linespacing_prev = linespacing_current;
872 // FIXME: we must detect MULTIPLE_DIFFERENT for these too
873 style_res->text_anchor.computed = style->text_anchor.computed;
874 style_res->writing_mode.computed = style->writing_mode.computed;
875 }
877 if (texts == 0)
878 return QUERY_STYLE_NOTHING;
880 if (texts > 1) {
881 size /= texts;
882 letterspacing /= texts;
883 linespacing /= texts;
884 }
886 style_res->font_size.computed = size;
887 style_res->font_size.type = SP_FONT_SIZE_LENGTH;
889 style_res->letter_spacing.normal = letterspacing_normal;
890 style_res->letter_spacing.computed = letterspacing;
892 style_res->line_height.normal = linespacing_normal;
893 style_res->line_height.computed = linespacing;
894 style_res->line_height.value = linespacing;
895 style_res->line_height.unit = SP_CSS_UNIT_PERCENT;
897 if (texts > 1) {
898 if (different) {
899 return QUERY_STYLE_MULTIPLE_AVERAGED;
900 } else {
901 return QUERY_STYLE_MULTIPLE_SAME;
902 }
903 } else {
904 return QUERY_STYLE_SINGLE;
905 }
906 }
908 /**
909 * Write to style_res the average font style of objects.
910 */
911 int
912 objects_query_fontstyle (GSList *objects, SPStyle *style_res)
913 {
914 bool different = false;
915 bool set = false;
917 int texts = 0;
919 for (GSList const *i = objects; i != NULL; i = i->next) {
920 SPObject *obj = SP_OBJECT (i->data);
922 if (!SP_IS_TEXT(obj) && !SP_IS_FLOWTEXT(obj)
923 && !SP_IS_TSPAN(obj) && !SP_IS_TEXTPATH(obj)
924 && !SP_IS_FLOWDIV(obj) && !SP_IS_FLOWPARA(obj) && !SP_IS_FLOWTSPAN(obj))
925 continue;
927 SPStyle *style = SP_OBJECT_STYLE (obj);
928 if (!style) continue;
930 texts ++;
932 if (set &&
933 font_style_to_pos(*style_res).signature() != font_style_to_pos(*style).signature() ) {
934 different = true; // different styles
935 }
937 set = TRUE;
938 style_res->font_weight.value = style_res->font_weight.computed = style->font_weight.computed;
939 style_res->font_style.value = style_res->font_style.computed = style->font_style.computed;
940 style_res->font_stretch.value = style_res->font_stretch.computed = style->font_stretch.computed;
941 style_res->font_variant.value = style_res->font_variant.computed = style->font_variant.computed;
942 style_res->text_align.value = style_res->text_align.computed = style->text_align.computed;
943 }
945 if (texts == 0 || !set)
946 return QUERY_STYLE_NOTHING;
948 if (texts > 1) {
949 if (different) {
950 return QUERY_STYLE_MULTIPLE_DIFFERENT;
951 } else {
952 return QUERY_STYLE_MULTIPLE_SAME;
953 }
954 } else {
955 return QUERY_STYLE_SINGLE;
956 }
957 }
959 /**
960 * Write to style_res the average font family of objects.
961 */
962 int
963 objects_query_fontfamily (GSList *objects, SPStyle *style_res)
964 {
965 bool different = false;
966 int texts = 0;
968 if (style_res->text->font_family.value) {
969 g_free(style_res->text->font_family.value);
970 style_res->text->font_family.value = NULL;
971 }
972 style_res->text->font_family.set = FALSE;
974 for (GSList const *i = objects; i != NULL; i = i->next) {
975 SPObject *obj = SP_OBJECT (i->data);
977 if (!SP_IS_TEXT(obj) && !SP_IS_FLOWTEXT(obj)
978 && !SP_IS_TSPAN(obj) && !SP_IS_TEXTPATH(obj)
979 && !SP_IS_FLOWDIV(obj) && !SP_IS_FLOWPARA(obj) && !SP_IS_FLOWTSPAN(obj))
980 continue;
982 SPStyle *style = SP_OBJECT_STYLE (obj);
983 if (!style) continue;
985 texts ++;
987 if (style_res->text->font_family.value && style->text->font_family.value &&
988 strcmp (style_res->text->font_family.value, style->text->font_family.value)) {
989 different = true; // different fonts
990 }
992 if (style_res->text->font_family.value) {
993 g_free(style_res->text->font_family.value);
994 style_res->text->font_family.value = NULL;
995 }
997 style_res->text->font_family.set = TRUE;
998 style_res->text->font_family.value = g_strdup(style->text->font_family.value);
999 }
1001 if (texts == 0 || !style_res->text->font_family.set)
1002 return QUERY_STYLE_NOTHING;
1004 if (texts > 1) {
1005 if (different) {
1006 return QUERY_STYLE_MULTIPLE_DIFFERENT;
1007 } else {
1008 return QUERY_STYLE_MULTIPLE_SAME;
1009 }
1010 } else {
1011 return QUERY_STYLE_SINGLE;
1012 }
1013 }
1015 int
1016 objects_query_blend (GSList *objects, SPStyle *style_res)
1017 {
1018 const int empty_prev = -2;
1019 const int complex_filter = 5;
1020 int blend = 0;
1021 float blend_prev = empty_prev;
1022 bool same_blend = true;
1023 guint items = 0;
1025 for (GSList const *i = objects; i != NULL; i = i->next) {
1026 SPObject *obj = SP_OBJECT (i->data);
1027 SPStyle *style = SP_OBJECT_STYLE (obj);
1028 if(!style || !SP_IS_ITEM(obj)) continue;
1030 items++;
1032 //if object has a filter
1033 if (style->filter.set && style->getFilter()) {
1034 int blurcount = 0;
1035 int blendcount = 0;
1037 // determine whether filter is simple (blend and/or blur) or complex
1038 for(SPObject *primitive_obj = style->getFilter()->children;
1039 primitive_obj && SP_IS_FILTER_PRIMITIVE(primitive_obj);
1040 primitive_obj = primitive_obj->next) {
1041 SPFilterPrimitive *primitive = SP_FILTER_PRIMITIVE(primitive_obj);
1042 if(SP_IS_FEBLEND(primitive))
1043 ++blendcount;
1044 else if(SP_IS_GAUSSIANBLUR(primitive))
1045 ++blurcount;
1046 else {
1047 blurcount = complex_filter;
1048 break;
1049 }
1050 }
1052 // simple filter
1053 if(blurcount == 1 || blendcount == 1) {
1054 for(SPObject *primitive_obj = style->getFilter()->children;
1055 primitive_obj && SP_IS_FILTER_PRIMITIVE(primitive_obj);
1056 primitive_obj = primitive_obj->next) {
1057 if(SP_IS_FEBLEND(primitive_obj)) {
1058 SPFeBlend *spblend = SP_FEBLEND(primitive_obj);
1059 blend = spblend->blend_mode;
1060 }
1061 }
1062 }
1063 else {
1064 blend = complex_filter;
1065 }
1066 }
1067 // defaults to blend mode = "normal"
1068 else {
1069 blend = 0;
1070 }
1072 if(blend_prev != empty_prev && blend_prev != blend)
1073 same_blend = false;
1074 blend_prev = blend;
1075 }
1077 if (items > 0) {
1078 style_res->filter_blend_mode.value = blend;
1079 }
1081 if (items == 0) {
1082 return QUERY_STYLE_NOTHING;
1083 } else if (items == 1) {
1084 return QUERY_STYLE_SINGLE;
1085 } else {
1086 if(same_blend)
1087 return QUERY_STYLE_MULTIPLE_SAME;
1088 else
1089 return QUERY_STYLE_MULTIPLE_DIFFERENT;
1090 }
1091 }
1093 /**
1094 * Write to style_res the average blurring of a list of objects.
1095 */
1096 int
1097 objects_query_blur (GSList *objects, SPStyle *style_res)
1098 {
1099 if (g_slist_length(objects) == 0) {
1100 /* No objects, set empty */
1101 return QUERY_STYLE_NOTHING;
1102 }
1104 float blur_sum = 0;
1105 float blur_prev = -1;
1106 bool same_blur = true;
1107 guint blur_items = 0;
1108 guint items = 0;
1110 for (GSList const *i = objects; i != NULL; i = i->next) {
1111 SPObject *obj = SP_OBJECT (i->data);
1112 SPStyle *style = SP_OBJECT_STYLE (obj);
1113 if (!style) continue;
1114 if (!SP_IS_ITEM(obj)) continue;
1116 NR::Matrix i2d = sp_item_i2d_affine (SP_ITEM(obj));
1118 items ++;
1120 //if object has a filter
1121 if (style->filter.set && style->getFilter()) {
1122 //cycle through filter primitives
1123 SPObject *primitive_obj = style->getFilter()->children;
1124 while (primitive_obj) {
1125 if (SP_IS_FILTER_PRIMITIVE(primitive_obj)) {
1126 SPFilterPrimitive *primitive = SP_FILTER_PRIMITIVE(primitive_obj);
1128 //if primitive is gaussianblur
1129 if(SP_IS_GAUSSIANBLUR(primitive)) {
1130 SPGaussianBlur * spblur = SP_GAUSSIANBLUR(primitive);
1131 float num = spblur->stdDeviation.getNumber();
1132 blur_sum += num * NR::expansion(i2d);
1133 if (blur_prev != -1 && fabs (num - blur_prev) > 1e-2) // rather low tolerance because difference in blur radii is much harder to notice than e.g. difference in sizes
1134 same_blur = false;
1135 blur_prev = num;
1136 //TODO: deal with opt number, for the moment it's not necessary to the ui.
1137 blur_items ++;
1138 }
1139 }
1140 primitive_obj = primitive_obj->next;
1141 }
1142 }
1143 }
1145 if (items > 0) {
1146 if (blur_items > 0)
1147 blur_sum /= blur_items;
1148 style_res->filter_gaussianBlur_deviation.value = blur_sum;
1149 }
1151 if (items == 0) {
1152 return QUERY_STYLE_NOTHING;
1153 } else if (items == 1) {
1154 return QUERY_STYLE_SINGLE;
1155 } else {
1156 if (same_blur)
1157 return QUERY_STYLE_MULTIPLE_SAME;
1158 else
1159 return QUERY_STYLE_MULTIPLE_AVERAGED;
1160 }
1161 }
1163 /**
1164 * Query the given list of objects for the given property, write
1165 * the result to style, return appropriate flag.
1166 */
1167 int
1168 sp_desktop_query_style_from_list (GSList *list, SPStyle *style, int property)
1169 {
1170 if (property == QUERY_STYLE_PROPERTY_FILL) {
1171 return objects_query_fillstroke (list, style, true);
1172 } else if (property == QUERY_STYLE_PROPERTY_STROKE) {
1173 return objects_query_fillstroke (list, style, false);
1175 } else if (property == QUERY_STYLE_PROPERTY_STROKEWIDTH) {
1176 return objects_query_strokewidth (list, style);
1177 } else if (property == QUERY_STYLE_PROPERTY_STROKEMITERLIMIT) {
1178 return objects_query_miterlimit (list, style);
1179 } else if (property == QUERY_STYLE_PROPERTY_STROKECAP) {
1180 return objects_query_strokecap (list, style);
1181 } else if (property == QUERY_STYLE_PROPERTY_STROKEJOIN) {
1182 return objects_query_strokejoin (list, style);
1184 } else if (property == QUERY_STYLE_PROPERTY_MASTEROPACITY) {
1185 return objects_query_opacity (list, style);
1187 } else if (property == QUERY_STYLE_PROPERTY_FONTFAMILY) {
1188 return objects_query_fontfamily (list, style);
1189 } else if (property == QUERY_STYLE_PROPERTY_FONTSTYLE) {
1190 return objects_query_fontstyle (list, style);
1191 } else if (property == QUERY_STYLE_PROPERTY_FONTNUMBERS) {
1192 return objects_query_fontnumbers (list, style);
1194 } else if (property == QUERY_STYLE_PROPERTY_BLEND) {
1195 return objects_query_blend (list, style);
1196 } else if (property == QUERY_STYLE_PROPERTY_BLUR) {
1197 return objects_query_blur (list, style);
1198 }
1199 return QUERY_STYLE_NOTHING;
1200 }
1203 /**
1204 * Query the subselection (if any) or selection on the given desktop for the given property, write
1205 * the result to style, return appropriate flag.
1206 */
1207 int
1208 sp_desktop_query_style(SPDesktop *desktop, SPStyle *style, int property)
1209 {
1210 int ret = desktop->_query_style_signal.emit(style, property);
1212 if (ret != QUERY_STYLE_NOTHING)
1213 return ret; // subselection returned a style, pass it on
1215 // otherwise, do querying and averaging over selection
1216 return sp_desktop_query_style_from_list ((GSList *) desktop->selection->itemList(), style, property);
1217 }
1219 /**
1220 * Do the same as sp_desktop_query_style for all (defined) style properties, return true if none of
1221 * the properties returned QUERY_STYLE_NOTHING.
1222 */
1223 bool
1224 sp_desktop_query_style_all (SPDesktop *desktop, SPStyle *query)
1225 {
1226 int result_family = sp_desktop_query_style (desktop, query, QUERY_STYLE_PROPERTY_FONTFAMILY);
1227 int result_fstyle = sp_desktop_query_style (desktop, query, QUERY_STYLE_PROPERTY_FONTSTYLE);
1228 int result_fnumbers = sp_desktop_query_style (desktop, query, QUERY_STYLE_PROPERTY_FONTNUMBERS);
1229 int result_fill = sp_desktop_query_style (desktop, query, QUERY_STYLE_PROPERTY_FILL);
1230 int result_stroke = sp_desktop_query_style (desktop, query, QUERY_STYLE_PROPERTY_STROKE);
1231 int result_strokewidth = sp_desktop_query_style (desktop, query, QUERY_STYLE_PROPERTY_STROKEWIDTH);
1232 int result_strokemiterlimit = sp_desktop_query_style (desktop, query, QUERY_STYLE_PROPERTY_STROKEMITERLIMIT);
1233 int result_strokecap = sp_desktop_query_style (desktop, query, QUERY_STYLE_PROPERTY_STROKECAP);
1234 int result_strokejoin = sp_desktop_query_style (desktop, query, QUERY_STYLE_PROPERTY_STROKEJOIN);
1235 int result_opacity = sp_desktop_query_style (desktop, query, QUERY_STYLE_PROPERTY_MASTEROPACITY);
1236 int result_blur = sp_desktop_query_style (desktop, query, QUERY_STYLE_PROPERTY_BLUR);
1238 return (result_family != QUERY_STYLE_NOTHING && result_fstyle != QUERY_STYLE_NOTHING && result_fnumbers != QUERY_STYLE_NOTHING && result_fill != QUERY_STYLE_NOTHING && result_stroke != QUERY_STYLE_NOTHING && result_opacity != QUERY_STYLE_NOTHING && result_strokewidth != QUERY_STYLE_NOTHING && result_strokemiterlimit != QUERY_STYLE_NOTHING && result_strokecap != QUERY_STYLE_NOTHING && result_strokejoin != QUERY_STYLE_NOTHING && result_blur != QUERY_STYLE_NOTHING);
1239 }
1242 /*
1243 Local Variables:
1244 mode:c++
1245 c-file-style:"stroustrup"
1246 c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
1247 indent-tabs-mode:nil
1248 fill-column:99
1249 End:
1250 */
1251 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4 :